比较大 476.34 MB ; http://www.namipan.com/d/%e5%b0%8f%e9%bc%a0%e5%9f%8b%e7%ae%a1%e6%bc%94%e7%a4%ba
E6%95%B0%20%E6%80%8E%E4%B9%88%E7%AE%97%E5%B9%B3%E5%9D%87%E5%80%BC%E5%92%8CSD#28880666但帖子里讲的那篇文章是用中位数
e5%85%b8%e3%80%91%e3%80%90%e5%be%90%e6%b7%91%e4%ba%91%e3%80%91%e8%8d%af%e7%90%86%e5%ae%9e%e9%aa%8c%e